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| author | Vlastimil Babka <vbabka@suse.cz> | 2015-11-06 05:47:56 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-06 06:34:48 +0300 |
| commit | fa6c7b46aaa0cc00846703e8c0ec1e1636ff25ba (patch) | |
| tree | f138e6d6d1c8b3a9957f73ef437416cd383cfcd7 /include/linux/compaction.h | |
| parent | 840807a8f40bb25a8df5b6412bba6bc156643be5 (diff) | |
| download | linux-fa6c7b46aaa0cc00846703e8c0ec1e1636ff25ba.tar.xz | |
mm, compaction: export tracepoints status strings to userspace
Some compaction tracepoints convert the integer return values to strings
using the compaction_status_string array. This works for in-kernel
printing, but not userspace trace printing of raw captured trace such as
via trace-cmd report.
This patch converts the private array to appropriate tracepoint macros
that result in proper userspace support.
trace-cmd output before:
transhuge-stres-4235 [000] 453.149280: mm_compaction_finished: node=0
zone=ffffffff81815d7a order=9 ret=
after:
transhuge-stres-4235 [000] 453.149280: mm_compaction_finished: node=0
zone=ffffffff81815d7a order=9 ret=partial
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/compaction.h')
| -rw-r--r-- | include/linux/compaction.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/compaction.h b/include/linux/compaction.h index aa8f61cf3a19..f14ba989092f 100644 --- a/include/linux/compaction.h +++ b/include/linux/compaction.h @@ -15,7 +15,7 @@ /* For more detailed tracepoint output */ #define COMPACT_NO_SUITABLE_PAGE 5 #define COMPACT_NOT_SUITABLE_ZONE 6 -/* When adding new state, please change compaction_status_string, too */ +/* When adding new states, please adjust include/trace/events/compaction.h */ /* Used to signal whether compaction detected need_sched() or lock contention */ /* No contention detected */ |